Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9
The light hitting the earth right now is 30 thousand years old.
163
The population of the Earth has more than doubled since 1950.
151
The earth is .02 degrees hotter during a full moon.
157